Binoculars - error corrected

[Lloyd Nielsen <>]

Sorry, in my earlier posting, I got multiplications and divides mixed up - it 
should have read -
"To work this out, divide the exit lens by the magnification and square it e.g. with 7x42s divide 42 by 7 which gives 6, then square it which makes 36. 10x40s gives a light value of  16 - moderate light; 16x50 gives a light 
value of 9.75 (not 9) - difficult in dark situations. 

Thanks Tony for pointing it out.

Lloyd Nielsen
Mt Molloy  Qld


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